//     Zepto.js
//     (c) 2010-2016 Thomas Fuchs
//     Zepto.js may be freely distributed under the MIT license.

(function ($) {
  										if ($.os.ios) {
    										var gesture = {}, gestureTimeout;

    										function parentIfText(node) {
      										return 'tagName' in node ? node : node.parentNode;
    }

    										$(document).bind('gesturestart', function (e) {
      										var now = Date.now(), delta = now - (gesture.last || now);
      										gesture.target = parentIfText(e.target);
      										gestureTimeout && clearTimeout(gestureTimeout);
      										gesture.e1 = e.scale;
      										gesture.last = now;
    }).bind('gesturechange', function (e) {
      										gesture.e2 = e.scale;
    }).bind('gestureend', function (e) {
      										if (gesture.e2 > 0) {
        										Math.abs(gesture.e1 - gesture.e2) != 0 && $(gesture.target).trigger('pinch') &&
          $(gesture.target).trigger('pinch' + (gesture.e1 - gesture.e2 > 0 ? 'In' : 'Out'));
        										gesture.e1 = gesture.e2 = gesture.last = 0;
      } else if ('last' in gesture) {
        										gesture = {};
      }
    })

    ;['pinch', 'pinchIn', 'pinchOut'].forEach(function (m) {
      										$.fn[m] = function (callback) { return this.bind(m, callback); };
    });
  }
})(Zepto);
